Type-casting machine.



I. SHUNBBRG, TYPE CASTING MACHINE. A'PPLIOATIONPILED JAN. 7, 1909.

Patented May 4, 1909. 4 snnm's-snnm' 1.

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I. SHONBERG. TYPE CASTING MACHINE. APPLICATION IILBD 31 11. 7, 1909.

920, 1 95, Patented May 4, 1909.

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I. SHCjNBERG.

TYPE CASTING MACHINE. nruonxon FILED JAN. '1, 1909.

Patented May 4, 1909.

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I. SHGNBERG'. TYPE GASTING MACHINE.

APPLICATION FILED JAN. 7, 1909.

9 20, 1 95. Patented May 4, 1909.

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ISAAC SHONBERG, OF NEW YORK, N. Y.

TYPE-CASTING MACHINE.

Specification of Letters Patent.

Patented May 4, 1909.

Application filed January 7, 1909. Serial No. 471,073.

enabling the opening and closing of the mold to be readily effected andthe adjustment of the size of and form of the mold cavity for theproduction of various styles of type to be easily and quickly made. Thisnovel mold forms a constituent part of a casting machine which possessesvarious features of invention other than those embodied in the mold,particularly with reference to the means indicated for isolating themolten metal subjected to the pressure of the plunger from the moltenmetal supply, the adaptability of the machine to either hand or poweroperation, etc.

Theaccompanying drawings illustrate a type casting machine embodying thefeatures of this invention, and in these drawings Figure 1 is a sideelevation of the top portion of such machine. Fig. 2 is a frontelevation part being in section and part be ing removed. Fig. 3 is aplan view of the machine. Fig. 4 is a plan view, upon a somewhatenlarged scale of the swinging mold-carrying arm and associated partsused in the hand operated machine, the full lines showing the relativecondition of parts in the closed position of the mold, and in dottedoutline such condition in the open position of the mold. Fig. 5 is alongitudinal section through such arm, parts being in elevation. Figs. 6and 7 are perspective details of the open mold looking from differentpoints of view toward the matrix side of the mold. Fig. 8 is aperspective detail of the swinging-mold carrying arm showing certainguides, guide-ways, etc., thereon. Fig. 9 is a plan view of the machineconstructed for power operation. Fig. 10 is a perspective detail of themold mechanism, etc., of Fig. 9. Fig. 11 is a detail of the adjustableangle arm for operating one of the mold parts. Fig. 12 is a detail ofthe melting pot looking at the orifice plate thereof.

Similar characters of reference designate corresponding parts in allfigures.

The illustrated support for the operative parts of the machine comprisesa platen or table B on a supporting pedestal C. Into an opening of thetable, a melting pot 2 is set, the pot being secured in position byproper fastening devices 3 and heated by some suitable source of heat 4.

A cylinder 5 in the melting pot communicates by a nozzle 6 with a nozzleorifice 7 in an orifice plate 7 In cylinder 5, a piston 8 works, a crosspin 8 of the piston being connected by a suitable connecting rod 8 witha rock lever, which in the hand operated machine of Figs. 1 to S,inclusive, and Fig. 12 consists of a hand lever 9 fulcrumed at one end 9to a fixture 9 on the side of the melting pot; in the power machine ofFigs. 9 and 10, rock lever 9" is fulcrumed intermediate its ends, see 9to the melting pot and is rocked to and fro by cams 10, 10 on a powershaft 11 journaled in suitable bearings 11, 11 secured to table B.

Molten metal enters the cylinder space below the piston through anopening 12 during the final stage of the ascending movement of thepiston. Upon the descent thereof a valve-forming projection 12 on thepiston enters said opening shutting off the further entrance of metaland confining the metal below the piston in the spout which metal isthereon forcibly ejected through orifice 7 as the piston is forceddownward.

Referring to the mold mechanism of the hand-operated machine of Figs. 1to 8, inclusive, it should be stated that the mold is mounted on aswinging arm 13 adapted to swing about a fixed stud 13 secured to andprojecting upward from table B from a position in which the mold is incontact with orifice plate 7 to a position away therefrom, seerespectively, the full and dotted outline positions in Fig. 4L. It isduring these to and fro swinging motions that the relative movement ofthe mold parts is effected. That is to say, rigid with arm 13 andprojecting laterally with reference to the plane of movement thereofis'a guide 14, angular in cross section, and longitudinally of which isadapted to reciprocate a slide 14, here of built-up construction andencircling the guide. This slide carries a part 15 whose squared end 15forms one face of the mold cavity and which slide is recipro- 6 5Swinging matrixcarrier 19 is swimg to 21 whereby the disk may be turnedaround sizes of types any particular one of which cable to open andclose the mold in the direction of reciprocation.

Other faces of the mold cavity are formed by a block 16, fixedrelatively 'to arm 13 and over which the end portion of part 15 mayslide; a bottom filler or wear plate 17 similarly fixed; a mold section18 secured to a slide 18 mounted on arm 13; the-matrix 19 in a swingingmatrix carrier 19; while the remaining face is constituted by the faceof orifice plate? when the mold is in position ready for casting.

Referring to the construction for opening and closing the mold that is,shifting part or section 15, section 18 and matrix carrier 19 as theresult of swinging arm 13 to and away from orifice 7, an enlarged pin ordisk '20 rotatively mounted on a pin 20 extending fromstud 13 in axiallyeccentric relation thereto is encircled by a strap 21 having anextension 21 pivoted by a pin 21 to the aforementioned slide 18 carryingmold section 18. Slide 18 is fitted to ways in arm 13 being retainedtherein by a gib It is evident that owing to the eccentric relation ofpin 20 and stud 13, as arm 13 is swung away from the orifice moldsection 18 is withdrawn enlarging the mold cavity in the direction ofmotion.

In order to enable the width of the mold cavity in this direction to bevaried, as in making different size types, disk 20 is pe ripherallynotched and with the same engages a tangent screw 23 mounted in strapthe axis of pin 20. After adjustment the strap may be firmly secured tothe disk by clamping screw 23.

Slide 16L is moved to and fro-during the reciprocation of arm 13 bymeans of a link 24: pivoted at one end to pin 20 and at the other end toone arm 2st of an angle lever, the other arm 241 of which is pivoted toslide 14. The said angle lever rocks upon a stud 24E extending fromguide 1%, the slide being slotted see 24 to permit of the play of stud24 and in order to adjust the size of the mold in the direction ofreciprocation of slide 14 (for types of various sizes lengthwise of thetype line) arm 2% adjust-ably clamped to a sleeve 24$ which is rotatablymounted on stud 2& This adj ustment of slide 1st is facilitated by aseries of sizing blocks corresponding to various may be placed below astop on slide M" and the arm 24 adjusted on sleeve 245* to bring thestop in engagement with the sizing block in whichposition slide latforms a mold cavity adapted to make the type corresponding to the sizingblock used. As illustrated in Fig. 5 the aforesaid stop is in the formof a screw 25, an inserted sizing block 25 being also indicated.

and fro on its pivot pin 26 simultaneously with the swinging movement ofarm 13 by means of-a link 26 pivoted at one end to the matrix carrierand at the opposite end to table B by a pivot pin 26 An operating handle27 is mounted on a stud 27 rigid with arm 13. This handle is here usednot only for swinging arm 13 but also for locking the mold against theorifice plate when the mold is in its casting position and the matrixcarrier against the closed iold. The former results from the engagementof a hook 27 on the handle with .a fixed pin 27 on table B while thelatter locking is effected by a slide 28 having a'pin 28" engaging witha slot 28 in handle 27 and a face 28 adapted to engage with a shoulder28* on the matrix carrier. Spring urges handle '27 to its lockingposition relatively to arm 13.

As the swinging movement of arm 13 away from the orifice plate iscontinued the type is eventually ejected from the opened moldby anejector 30 and drops through an opening 30 in table, the movement of thearm being limited by a stop 30 The operation of the construction so fardescribed is apparent; the mold being in its casting position,see Fig.4, plunger 8 may thereupon be depressed subjecting the metal confined inspent 6 by valve 12 to pressure and forcibly injecting same into themold cavity. If handle 27 is now swung to the left in Fig. 3 arm 13 isunlocked from pin 27 and slide 28 is actuated to unlock matrix carrier19. Continued movement toward the left raises slide 1r withdraws moldsection 18 and swings the matrix carrier backward, all in the mannerdescribed.v The type is finally ejected by ejector 30. motion of arm 13is accompanied by a reverse motion of the parts eventually closing themold and locking the same against the orifice plate ready for anotheroperation.

In the power nachine of Figs. 9 and 10,.

parts substantially identicalv in construction with the parts alreadydescribed are desigated by like characters of reference and need not beagain referred. to except briefly. The cam operation of the metalplunger has already been described. Clamp arm at and fixed arm 2& forshifting slide 14 arehere secured to a rock shaft (not shown) mounted ina bearing 31 and actuated through a spring-returned camlink 32 from acam 32 on shaft 11. Matrix carrier pivot pin 26 extends from table B andmatrix carrier 19 is swung thereon through a springreturned cam link 33from a cam 33 on shaft 11 while matrix carrier locking slide 28 isactuated through an eccentric and strap connection 34: from shaft 11.

Mold section 18 is secured to slide 18 which here moves as a unit withplate 17 through a strap and eccentric connection 35- from shaft 11, theslide being, however, adjustable relatively to such plate (for varioussize types) as by an adjusting screw 36.

It should be stated as a preface to the description of the manner ofejecting the type here adopted that slide 14 here moves downward insteadof upward as in the former case following the making of a type, thisdownward movement being preceded by the withdrawal of slide 18sufliciently to carry attached plate 17 0 out from under the type. Thedownward movement then forces the type downward across the path ofmovement of the plate and should the type stick in this positiontheforward movement of the plate breaks the type loose and it descendsthrough an opening 30 in table B. Before the final positioning ofsection 18 slide 14L rises, its highest or mold forming position beingregulated by the co-action of a stop 25 on guide 14 and a sizing blockinserted between it and lug 25 in the slide in an analogous manner towhat has already been described with reference to stop 25.

The sequence of movements involved in the making and ejection of a typeis substantially the same as that already described with reference tothe hand operated machine.

It is to be noted that in both the hand and power operated constructionsthere is a mold section adapted to permit one of the other mold sectionsto slide along its moldforming surface.

Fig. 12 illustrates a sprue cutter consisting of a slide 37 mounted inguide-ways in the orifice plate 7 and limited in its upward movement bya stop 38. When positioned against this stop an elongated orifice 7 isformed which ismaintained as long as the molten metal is subjected topressure. Upon the release of such. pressure slide 87 by the reaction ofspring 39 aided by its own weight descends, closes the orifice andpermits the molten metal in the spout beyond the closed slide to flowback.

Having described my invention, I claim;

1. In a type casting machine, a sectional mold embodying a relativelyfixed mold section, a reciprocating slide, a mold section secured tosaid slide, a third mold section adapted to permit said second mentionedmold section to slide along its mold-forming surface, and a matrixcarrier combined with means for regulating the mold-forming position ofsaid slide to correspond to the type to be made.

2. In a type casting machine, a sectionalmold embodying a relativelyfixed mold section, a reciprocating slide, a mold section secured tosaid slide, a third mold section adapted to permit said second mentionedmold section to slide along its mold-forming surface, a reciprocatingslide to which said third mold section is secured and a matrix carrier,said slides being adjustably positioned in their respective lines ofreciprocation tor the purpose specified, combined with means foroperating said slides to open and close the mold.

3. The combination in a type casting machine, of a sectional moldembodying a swinging matrix carrier, and a pair of reciprocating slidesadjustably positioned in their respective lines of reciprocation for thepurpose specified, and means for operating said carrier and slides toopen and close the mold.

+1. The combination in a type casting machine, ot' a sectional moldembodying a swinging matrix carrier, and a pair of reciprocating slidesadjustably positioned in their respective lines of reciprocation for thepurpose specified, a lock for holding the matrix carrier rigidly in itscasting position; and means tor operating said carrier, slides and lockin proper sequence.

5. The combination in a type casting machine of a sectional moldembodying a matrix carrier, and a pair of reciprocating slidesadjustably positioned in their respective lines of reciprocation for theurpose specified, a locking device for holding the mold rigidly in itscasting position, and means for operating said carrier, slides andlocking device in proper sequence.

6. The combination, in a type casting machine of a sectional mold, amelting pot, a plunger, a nozzle having an opening from its interiorinto the melting pot, and a valve like projection on said plunger alinedwith said openin 7. In a type casting machine, the combination of anorifice plate, a swinging arm, a sectional mold mounted on said arm, andmeans connecting with sections of the mold for opening and closing themold during the movement of the arm toward and away from the orificeplate.

8. In a type casting machine, the combination of an orifice plate, aswinging arm, a transverse guide on the arm, a slide movable lengthwiseof said guide, a swinging matrix carrier, a slide movable lengthwise ofsaid arm, a supporting table, and means on said table for causing themovements of said slides and matrix carrier during the motion 01 the armtoward and away from the orifice plate.

9. In a type casting machine, the combination of an orifice plate, aswinging arm, a transverse guide on the arm, a slide movable lengthwiseof said guide, a swinging matrix carrier, a slide movable lengthwise ofsaid arm, an operating handle for the arm, locking means under thecontrol of said handle for locking the matrix carrier to the mold andthe mold to the orifice plate, a supporting table, and means on saidtable for causing the movements of said slides and matrix carrier duringthe motion of the arm toward and away from the orifice plate.

10. In a type casting machine, the combination of a swinging arm, asectional mold thereon, a supporting table, pivot pins sup ported bysaid table eccentric to the pivotal axis of said arm, and linksconnecting mold sections to said eccentric pivot pins for the purposespecified.

11. In a type casting machine the combination of a swinging arm, asupporting table, separable mold sections mounted on said arm and pivotpins supported by the table eccentric to the pivotal axis of said arm,said separable mold sections being adjustably connected to said pivotpins substantially for the purpose specified.

12; 'In a type casting machine, the combination of a shiftable moldcarrier, a sectional mold thereon embodying a matrix carrier movablerelatively to said mold carrier, an orifice plate, a supporting table, aspring-pressed part for operating said mold carrier, means extendingfrom the table and with which said operating part is adapted to engageto thereby lock the mold carrier against the orifice plate, and a lockconnected to said operating part for locking the matrix carrier in itscasting position.

In witness whereof I'have signed this specification in the presence oftwo subscribmg witnesses.

ISAAC SHONBERG. \Vitnesses R. W. PITTMAN, LOUIS LoNG.

